System and method for estimating damper temperature
AssigneeFord Global Technologies, LLC
InventorsAhmed Mohamed, Russ Lee Norton
Life of this patent
Estimating the term…
Abstract
Systems and methods for controlling a damper force based on temperature are disclosed. Signals associated with a damping force value of one or more dampers are received at a controller. The signals are received, at the controller, from at least one suspension height sensor, at least one vehicle velocity sensor, at least one ambient temperature sensor, and at least one engine coolant sensor. A damper temperature is estimated, at the controller, and a damping force of the damper is adjusted to a nominal force based on the estimated damper temperature.
Claims18
A vehicle damper monitoring system for controlling damper force based on temperature, comprising:
- at least one suspension height sensor, at least one vehicle velocity sensor, at least one ambient temperature sensor, and at least one engine coolant sensor;
- and
- at least one controller configured to:
- receive signals from each of the sensors, wherein the received signals are associated with an actual damping force value of one or more dampers;
- compare the actual damping force value of the one or more dampers to a predetermined value range:
- and
- when the actual damping force value does not fall within the predetermined value range:
- calculate an estimated damper temperature value;
- and
- send a signal to compensate a damping force of one or more of the dampers associated with the vehicle's suspension system, the damping force being compensated by varying orifices of the one or more dampers to allow for more or less damping.
A system for estimating a controlled damper temperature, the system comprising;
- a vehicle and a controller, the controller being configured to:
- calculate a current damper temperature value of a damper, the current damper temperature value being based on an initial damper temperature value, a determined ambient temperature factor, and work exerted by the damper;
- calculate a final damper temperature value of the damper based on a plausibility of the current damper temperature value and a determined damper temperature state;
- and
- compensate a damping force signal based on variations between the initial damper temperature value and the final damper temperature value.
A method for controlling damper force comprising:
- receiving, at a controller, signals associated with a damping force value of one or more dampers, the signals are received from a suspension height sensor, a vehicle velocity sensor, an ambient temperature sensor, and an engine coolant sensor;
- estimating a damper temperature;
- determining a plausibility of the estimated damper temperature;
- and
- adjusting, based on the determined plausibility, a damping force of the damper to a nominal force.
A method for estimating a controlled damper temperature, the method comprising:
- calculating, at the controller, a current damper temperature value of a damper, the current damper temperature value being based on an initial damper temperature value, a determined ambient temperature factor, and work exerted by the damper;
- calculating, at the controller, a final damper temperature value of the damper based on a plausibility of the current damper temperature value and an associated damper temperature state;
- and
- compensating a damping signal based on variations between the initial damper temperature value and the final damper temperature value.
Dependencies are inferred from the claim text.